Ultra Wide Monitor Fullscreen button alternative

On ultra wide monitors it's not ideal to view the Supademo in Full screen mode in the browser. The aspect ratio becomes off, and it's not a user friendly experience on Ultra wide monitor. Instead it would be nice to be able to have an option to open it in a Modal/Popup that fills up the current Window (application) screen. That way on Ultra wide screens you can have a more user friendly experience. For instance try to do it on a Samsung Odyssey g9. You will understand how uncomfortable it is in Full Screen.